
public class Tests {

	public static void main(String[] args) {
		String substrings = "20, -5, ab";
		
		String[] tempArray = substrings.split(",");
		
		for(int i = 0; i<tempArray.length; i++){
			//System.out.println(tempArray[i]);
			String tempSubstring = tempArray[i];
			
			for(int j=0; j<tempSubstring.length();j++){
				char tempChar = tempSubstring.charAt(j);
				
				
			}
		}
		
		
		

	}

}
